Oil heater



Apaiifi, $25.

a. A. sAvlLLE. JR, ET AL OIL HEATER Filed Oct. 20, 1924 INVENTORSATTORNEY WMJL a s I V Patented Ann 2,

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GEGRG-E A. SAVILLE, 33., AND EETER SCHMALL, OF LINCOLN, NEBRASKA, SAIDFBCH'MALL, ASSIGNOR. T0 SAID SAVILLE, TR.

oin finesse.

Application filed lictohcr 20, 1924.

T 0 all whom it may concern;

Be it known that we, GEORGE A. Sm'rnmc, J1'., and PETER SCHMALL,citizens of the United States, residing at Lincoln, in the county ofLancaster and State of Nebraska, have invented certain new and usefulIniproveincnts in Oil Heaters, of which the following is aspecification.

Our invention relates to oil heaters to: Warming and thereby thinningthe oil in the crank case or an internal combustion engine.

The winter use of ou 'iobiles is insterielly restricted because of twoifsctors; the freezing of the Water in radiator and the thiclrening'ozfthe oil in the case. Of the two, the latter is the more insidiousbecause the driver of the automobile receives no Warning until seriousdamage has been clone to the bearings and other parts of the car, Thecirculation of the oil in most automobiles is maintained through a.filter or screen, and when the oil lzecornes too thick to pass throughhe screen, it ceases entirely to circulate and. to function as alubricant.

The object of our invention is provision of a heating unit Whichreceivesthe heat from the hot exhaust.- and transmits or applies the heat to heouter side of the crank case but in proximity to the-screen. Otherobjects will be pointed out inthe following description.

in the drawings,

Figure l is a View perspective of our heating unit.

Figure 2 is a side eler tion of an inter-mil combustion engine with ouroil heater attached thereto.

Figure 3 is a, vertical sectional View of the strainer and the oilheater, showing particularly the relationship of each to the other andto the wall of the crank case.

Theheating unit 10 is pen shaped, being closed on all sides but thatwhich is in contact with the crank ease. in the present instance it isshown as cylindrical in form, but it is to be understood-that the size,form.

and relative dimensions may be varied asrequired in the differentinstallations. As.

Serial No. 74 70.

.or more beiiie plates 15 arranged transversely between the two ports.In order to fully utilize the heat of the exhaust gases, the battleplates are staggered so as to conduct the exhaust gases through a.tortuous P,

path.

The hosting unit 10 has a plurality of cars 16 secured thereto. l'lheears are which is bent into right angled form, no. they are secured tothe Wall of the heating unit with their car portions directed outwardlyand lying in the plane oithe open side of the heating unit. [it theirupper ends they ere'spececl somewhat from the edge of the heating unit.Each. our has an aperture for receiving one of the bolts 17 which securethe strainer plate to the wall of the crank case. Since the relativepositions of the bolts 17 are not always 11111 form, it is necessary toallow. for a little play in the ears, this being accomplished by theresilient character of the material from which the ears are formed andby slightly spacing the cars from the edge of the heating unit. Theremay be as many cars 16 as there are bolts 17, but our experience hasbeen that the heating unit may be firmly secured by means of threeequidistantly spliced ears as shown.

For utilizing, a portion of the exhaust gases, the heating; unit isconnected at any desired point with the exhaust or exhaust pipe. Anysuitable flexible tubing 18 is connected with the nipple 13 tocommunicute with an aperture in the exhaust or exhaust pipe. To properlycontrol the movement of the exhaust gas through the heating unit, Weplace a Valve 19 anywhere in the connections whereby the flow of cxheust gas through the by pass may be regulated or shut off entirely.

Our heating unit is positioned Where it is convenient of access butwhere at the same ill) formed from more or less resilient material timeit is entirely out of the 'way. When the valve 19 is opened, a portionof the exhaust throng the heating unit. An intenseheat is thus applieddirectly to the strainer plate at the very bottom of the strainer wherethe oil is thickest and wherejce in the oil is most likely to accumulateand to clog the strainer. Since all parts of our oil heater arepositioned entirely outside the crank case and secured thereto byreadily detachable securing means, the device may be removed in a fewminutes time and stored during the summer, but with the freezingtemperatures of Winter it may be again attached without any difficultyand without the use of special tools. The fact that it is structurallyentirely independent from the strainer is important. During the warmseasonithe presence of an oil heater is objcctional because theaccidental openin of the valve will result in the undue thinning andheating of the oil in the crank case. This cannot happen when, as in ourdevice, the heater can be so easily removed.

We are aware that other heaters have been designed for utilizing exhaustgases for heating the oil in the crank case, but so far as we are awarethere is none that is so readily attachable and detachable and which atthe same time applies the heat directly to the outer surface of thestrainer Plate Having thus described our invention 1n term; which willbe readily understood by others skilled in the art to which it pertains,what we claim as new and desire to secure. by Letters Patent of theUnited states 1s:- ases rush throu h the by pass and;

1. An oil heater havi' an inlet best and an outlet port, a plurahty ofbafile plates providing a tortuous passage between said.

inlet and outlet ports, said oil heater being adapted to be secured tothe outer side of the crank case of an internal combustion engine and inclose proximity to the oil strainer, and a connection to said inlet portfor recelvingexhaust gases from the engine.

2. An oil heater having the form'of the strainer plate of an. internalcombustion engine and being adapted to be secured in intimate contactwith the exterior surface of the strainer plate, said oil heater haw ingan open side adjacent the strainer plate, an inlet port in the side ofsaid oil heater, anippie secured to the said oil heater at the inletport, a conductor connected to said nipple and adapted to be connectedt0 receive exhaust gases from the engine and to conduct the exhaustgases into the said oil heater, battle plates Within said oil heater forproviding a tortuous passageway for the exhaust gases within the oilheater, and resilient. ears secured to the said oil heater, said earsbeing adjustable inposition and being provided with apertures forreceiving the bolts which secure the strainer plate to the Wall of thecrank case of the engine.

In testimony whereof We atlix our signs I tures GEORGE A, SAVILLE, JR.PETER SCHMALL.

